What is Caffeine indexing?

Hi Matt, Is Caffeine indexing is really helpful for SEO? What is Caffeine indexing exactly? Manvesh, India Have a question? Ask it in our Webmaster Help Forum: www.google.com Want your question to be answered on a video like this? Follow us on Twitter and look for an announcement when we take new questions: twitter.com More videos: www.youtube.com Webmaster Central Blog: googlewebmastercentral.blogspot.com Webmaster Central: www.google.com